remove last part of deprecated metrics

staging/src/k8s.io/apiserver/pkg/storage/value/metrics.go

@@ -65,18 +65,6 @@ var (
 		[]string{"transformation_type", "transformer_prefix", "status"},
 	)
 
-	deprecatedTransformerFailuresTotal = metrics.NewCounterVec(
-		&metrics.CounterOpts{
-			Namespace:         namespace,
-			Subsystem:         subsystem,
-			Name:              "transformation_failures_total",
-			Help:              "Total number of failed transformation operations.",
-			StabilityLevel:    metrics.ALPHA,
-			DeprecatedVersion: "1.15.0",
-		},
-		[]string{"transformation_type"},
-	)
-
 	envelopeTransformationCacheMissTotal = metrics.NewCounter(
 		&metrics.CounterOpts{
 			Namespace:      namespace,
@@ -115,7 +103,6 @@ func RegisterMetrics() {
 	registerMetrics.Do(func() {
 		legacyregistry.MustRegister(transformerLatencies)
 		legacyregistry.MustRegister(transformerOperationsTotal)
-		legacyregistry.MustRegister(deprecatedTransformerFailuresTotal)
 		legacyregistry.MustRegister(envelopeTransformationCacheMissTotal)
 		legacyregistry.MustRegister(dataKeyGenerationLatencies)
 		legacyregistry.MustRegister(dataKeyGenerationFailuresTotal)
@@ -130,8 +117,6 @@ func RecordTransformation(transformationType, transformerPrefix string, start ti
 	switch {
 	case err == nil:
 		transformerLatencies.WithLabelValues(transformationType).Observe(sinceInSeconds(start))
-	default:
-		deprecatedTransformerFailuresTotal.WithLabelValues(transformationType).Inc()
 	}
 }
 

staging/src/k8s.io/apiserver/pkg/storage/value/metrics_test.go

@@ -105,7 +105,6 @@ func TestTotals(t *testing.T) {
 			tt.prefix.TransformToStorage([]byte("value"), nil)
 			tt.prefix.TransformFromStorage([]byte("k8s:enc:kms:v1:value"), nil)
 			defer transformerOperationsTotal.Reset()
-			defer deprecatedTransformerFailuresTotal.Reset()
 			if err := testutil.GatherAndCompare(legacyregistry.DefaultGatherer, strings.NewReader(tt.want), tt.metrics...); err != nil {
 				t.Fatal(err)
 			}

staging/src/k8s.io/component-base/metrics/prometheus/restclient/metrics.go

@@ -38,17 +38,6 @@ var (
 		[]string{"verb", "url"},
 	)
 
-	// deprecatedRequestLatency is deprecated, please use requestLatency.
-	deprecatedRequestLatency = k8smetrics.NewHistogramVec(
-		&k8smetrics.HistogramOpts{
-			Name:              "rest_client_request_latency_seconds",
-			Help:              "Request latency in seconds. Broken down by verb and URL.",
-			Buckets:           k8smetrics.ExponentialBuckets(0.001, 2, 10),
-			DeprecatedVersion: "1.14.0",
-		},
-		[]string{"verb", "url"},
-	)
-
 	requestResult = k8smetrics.NewCounterVec(
 		&k8smetrics.CounterOpts{
 			Name: "rest_client_requests_total",
@@ -110,26 +99,23 @@ var (
 func init() {
 
 	legacyregistry.MustRegister(requestLatency)
-	legacyregistry.MustRegister(deprecatedRequestLatency)
 	legacyregistry.MustRegister(requestResult)
 	legacyregistry.RawMustRegister(execPluginCertTTL)
 	legacyregistry.MustRegister(execPluginCertRotation)
 	metrics.Register(metrics.RegisterOpts{
 		ClientCertExpiry:      execPluginCertTTLAdapter,
 		ClientCertRotationAge: &rotationAdapter{m: execPluginCertRotation},
-		RequestLatency:        &latencyAdapter{m: requestLatency, dm: deprecatedRequestLatency},
+		RequestLatency:        &latencyAdapter{m: requestLatency},
 		RequestResult:         &resultAdapter{requestResult},
 	})
 }
 
 type latencyAdapter struct {
-	m  *k8smetrics.HistogramVec
-	dm *k8smetrics.HistogramVec
+	m *k8smetrics.HistogramVec
 }
 
 func (l *latencyAdapter) Observe(verb string, u url.URL, latency time.Duration) {
 	l.m.WithLabelValues(verb, u.String()).Observe(latency.Seconds())
-	l.dm.WithLabelValues(verb, u.String()).Observe(latency.Seconds())
 }
 
 type resultAdapter struct {